Rotatable delivery-shelf.



I A P P L i PATBNTBD 0C TTTTTTTT 6. T. VAN NNNNNNN up' W 4` l' l .I

No. 833,810. PATBNTED 00123, 1906.

A T. VAN KANNEL.

ROTATABLBZDELIVBRY SHELF.y

APPLICATION FILED NOV.16. 1905.

' a SHEETS-SHEET 2.

, PATBNTED' 00T. z3, 1906. T.. VAN KANNEL.l`v r v ROTATABLBDELIVBRYSHELF'.

APPLICATION FILED `NOVl 16j. 1905.

` 3 SHEETS-SHEET 3.

fnrrnanlus PlrllsAco.. IIIAuHNmN, n. c.

, UNITED sTATEs IPATENT OEEIOE.

` THEOPHILUs'vAN KANNEL, OF NEW YORK, N. Y., AssIGNOR To VAN KANNELREVOLVING IDOOR COMPANY, OENEw YORK, N. Y., A CORPORATION WESTVIRGINIA.`

No. 833,810. f

Specification ofLetters Patent.

yEOTATABLE DELIVERY-SHELF.

Patented Oct. 23, 1906.

Original application filed June 3, 1905, Serial No. 263,653. Divided andthis application led Novembei.` 16, 1905. Serial No. 287.690. Y

To all whom, t `may concern/: j

. Be it known that I, THEoPHrLUs VAN KANNEL, a citizen of the UnitedStates, resid- `ing at No. 524 East One hundred and thirtyfourth street,NewYork, county of New York, andjState of New York, have invented cerisa division'of my, application, Serial No.

263,653, led June 3,1905,for patent on rotatable partition-shelf, andlrelates particularly vto the use of a suitable motor, as a spring orweight, for turning the shelf a part rotation within its casing, and tomeans operated by hand for energizing the motor or setting it in anoperable condition and releasing it Vto n actuate the shelf. f

A person unfamiliar with the yuse of a rotating shelf would'be liable tostopy or start the. yshelf suddenly, and thus spill food from thedishes. By using a spring or weight of suitable proportions `a motor canbe obtained which will operate to turn the shelf with very little excessof force, and thus avoid the' jarring of the shelf and its contents,which might otherwise occur. In combining the -motor with the shelf apulley is preferably fitted to turn loosely upon one of the shelfpivotsor spindles and the spring or weight connected with such pulley, to turnthe same automatically when the spring is wound or the weighty raised.The pulleyis connected with the shelf or its spindle by a pawl andratchet, andV cords and handles are provided to turn the pulleysufficiently to wind the ,spring or raise the weight and-simultaneouslyvengage the pawl and ratchet, so that i when the handlesare released the motor may turn the shelf until arrested.

spring-motor, Fig. 2 being a vertical section on line 2 2 in Fig. 3,which is a horizontal section on line 3 3 in Fig. 2. Figs. 4 to 7,inclusive, showin diagrammatic form the use of a weight as a motor. Fig.4 shows a vertical Section analogous to Fig. 2, the section being madein the plane of the partition. Fig. 5 is a cross-section of thepartition adjacent to the weight and its hand connection. Fig. 6 is across-section on line 8 8 in Fig. 4, and Fig. 7 is a plan of the partsshown in Fig. 4

with the upper bearing for the drum-journal removed.

A designates the partition separating two rooms with which the pantrywindow or rotatable shelf communicates.

` M is the casing, having open doorways at opposite sides of thepartition and packings N and O contactingwith the drum to-prevent thepassage of vapors therethrough. Y

In Fig. 2, C designates a journal in the partition for the lower head Dof the drum, with bearing on thebottom L of the casing.

-J designates a journal for the up er head E of the drum, with bearingupon t e top/L of the casing. The drum is Ashown formed with segmentalsides F, -having a shelf G intermediate to the -heads D and E, and aquadrantal window-panel H, fitted between the intermediate shelf and theupper head at one edge of the shelf, and a similar panel between theshelf and the lower head at the opposite edge ofthe shelf, thus leavingdoorways F between the sides F, which are open at opposite sides of thedrum or opposite edges of the shelf, above and below the same. Thepulley c, has its hub fitted toturn upon the journal J, and a,coil-spring f is wound around the hub of the pulley and has one endattached to the pulley, and the opposite en'd to a stationary support g.A ratchetwheel with two teeth d is attached rigidly t the. journal J,and the wheel e is' provided vwith a spring-pawl p to engage such teeth.

`The pulley e is provided with two grooves and cords 7L and/i, wrapped'varound the grooves and 'their ends secured by `staple y'. The

cords are extended over guide-wheels 7c arid l" within reach of theoperators -at opposite sides of the partition, the ends 'being providedwith handles m and n for turning the jfl pulley. AThe cords 'arearranged sothat thef"w pulling of the handles turn 'the wheel e and`pulls the pawl backwardly from one tooth d to the next, which pull windsthe spring f a half-rotation and gives it su'liicient tension to turnthe drum a half-rotation. A stop I is attached to the wheel e and isheld normally by the weight or spring against an abutment p and is drawnback when the cord h or i is pulled. Such stop limits the returnmovement of the wheel e when the cords are released, but does notpositively control the movement of the drum. A cam a is shown in Fig. 2,combined with rolls b, attached to leaf-spring c, the same as shown inFig. 5 of my copending application, Serial No. 263,653. Such cam isformed with recesses upon opposite sides, and the springs press therollers normally into such recesses, which are arranged in relation tothe doorways F upon the drum so as to arrest the drum when the doorwayscoincide with the doorways of the casing. The stop I thus regulates themovement of the wheel e, while the cam a, regulates the movement lof thedrum. The spring is thus set in an operable condition by the pulling ofthe handle m or n, and then operates thereafter automatically with apredetermined force to turn the drum the desired half-rotation.

The motor formed of a weight is shown in Figs. 6 to 9, inclusive, wherethe top of a weight g, instead of a spring, is connected with one sideof the pulley o by cord 7L and the bottom of the weight with theopposite side of the pulley by cord h2, carried over guidewheels g2. Thecord is kept taut by a weight The weight is also connected by cords ewith handlesr fm and n upon opposite sides of the partition, and theweight is fitted to slide in a vertical box r, having a check-valve s toadmit air freely during the raising of the weight and an adjustable ventwhich can be regulated to control the descent of the weight during itsoperation upon the drum. The handles m and n are shown in Fig. 7 intheir depressed position. To form such vent, a strip tis fitted in agroove t in one side of the box and adjusted by holding-bolts u andsetscrews u, so as to leave a vertical passage s by the side of theweight as it descends in the box. The adjustment of the bolts and screwspermits the strip t to be set at different distances from the weight indifferent parts of the box, so as to modify the area of the vent-passages', and thus afford the air a free vent when the weight is firstdescending and choke off the vent near the end of the descent when it isrequisite to bring the movement of the drum gradually to rest.

In Fig. 9 the lower journal is replaced by antifriction-balls fitted tocircular channels. A weight has several advantages over a spring forshifting the drum in the manner described, as the weight produces auniform pull upon the rope throughout its entire movement and can bearranged to rest upon the bottom of its inclosing box at the end of itsstroke, thus limiting the stroke without. applying any strip to thepulley e.

Any other means of connecting the motor with the drum may be employed,as the essential feature of the invention is the connection with themotor of means operated by hand for setting the motor in an operablecondition and releasing it to actuate the drum. With such an arrangementthe force of the motor is expended at the end of each movement of thedrum, and the setting of it in an operable condition consists inreenergizing the motor by lifting the weight or winding the spring to adegree just su'lliciem', to shift the drum. Such mechanism alwaysoperates the rotating shelf uniformly and is thus more efficient andsatisfactory in praetice than any means for pulling the drum arounddirectly by hand, as the operation of the weight upon the drum can becontrolled to vary the movement of the drum. From the above descriptionit will be `understood that the invention embraces means for energizingthe motor, which means (when operated) simultaneously brings the motorinto operative engagement with the shelf, sueh that when the means isreleased the motor will rotate the shelf to the desired extent. Theengagement of the motor with the shelf may be operatively effected byany suitable means, the means shown consisting of the ratchet rigidlymounted upon one of the journals upon the shelf, a pawl movably mountedadjacent thereto, and manuallyoperated means for propelling the pawlinto a suitable position to engage with the ratchet.

Having thus set forth the nature of the invention, what is claimedherein isl. A rotatable delivery-shelf, a motor, and means forenergizing such motor, said means when operated simultaneously bringingsaid motor into operative engagement with the shelf, such that when thesaid means is released the motor will rotate the shelf to the desiredextent.

2. A delivery shelf, journals attached thereto whereby the shelf isrotatably mounted on a suitable support, a ratchet rigidly mounted onone of the journals. a pawl movably mounted adjacent thereto,manuallyoperated means for propelling the pawl into a suitable positionto engage with the ratchet, said means when operated simultaneouslyenergizing a motor, whereby said motor when released after saidengagement will automatically rotate the shelf.

3. A rotatable delivery-shelf, a cord and weight connected to the shelf'for turning it, a box inclosin g the weight movably and coufining acushion of air beneath the weight, and a groove in the side of the boxhaving its wall adjustable to and from the weight to vary and controlthe escape of air beneath the weight when turning the shelf.

IIO

833,810 4 i A i 3 4. A rotary delivery-shelf, a cord and Weightconnected to the shelf for automatically turning it, a -boX inclosingthe Weight movably and confining a cushion of air beneath the Weight, agroove in the side of the boX to permit the escape of air past theWeight, and a gib fitted to the groove and adjustable at differentpoints in its length, to

control the escape of air diversely at different points during thedescent of the Weight.

5. The combination of a delivery-shelf pivoted to rotate, a cord andWeight connected to the shelf for automatically turning it ahalf-rotation, a box inclosing the Weight neath the Weight, a handlevfor raising the Weight, and a check-valve admitting air beneath theWeight during the raising of the same, and closing to retain air duringthe descent of the Weight When turning the shelf.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing Witnesses.

^ THEQPHILUS VAN KANNEL.

Witnesses:

JOHN J. RAPP, FRED FIEN.

Amovably and coniningra cushion of air bei5v

